reporter: tax watchdogs say the premium was never meant for desk jobs when it began years ago to reimburse cal fire managers. >> when we return, how keeping something too close to your heart can kill you. barter cancer kills one in five women, 40,000 of them every year. ktvu health and science editor reviews how young women may put themselves in harm's way. >> reporter: it's convenient say many young women. >> it's probably the most convenient place to put it especially when you go out. you put your money on one breast and the phone in the other. >> it's easy to feel the vibration and someone texts you, you can get the call really fast. >> reporter: maybe they should talk to tiffany france. her mother had misgivings. >> we never took it seriously until after she was diagnosed. >> reporter: tiffany got breast cancer at 21. >> it just so happened her tumors were exactly where her cell phone had been against her skin, her bare skin for about six years. >> reporter: surgeons removed tiffany's left breast. >> it's kind of coincidental it's right where i kept my cell phone are. >> reporter: the dots